Microdyne Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4907003 Satellite receiver and acquisiton systemExpiredDec 22, 86Mar 06, 90[H04B]
4876737 Satellite data transmission and receiving stationExpiredNov 26, 86Oct 24, 89[H04B]
4636736 Variable phase signal demodulatorExpiredJul 26, 84Jan 13, 87[H02L, H03D]
4538175 Receive only earth satellite ground stationExpiredJul 11, 80Aug 27, 85[H04N]
4492930 Automatic gain control systemExpiredOct 13, 81Jan 08, 85[H03G]
4441079 Multiple bandwidth FM demodulatorExpiredOct 13, 81Apr 03, 84[H03D]
4429418 Frequency agile satellite receiverExpiredJul 11, 80Jan 31, 84[H04B]
4403331 Method and apparatus for transmitting data over limited bandwidth channelsExpiredMay 01, 81Sep 06, 83[H03K]
4390086 Automatic adjusters for drum brakesExpiredMay 19, 80Jun 28, 83[F16D]
4387393 Signal unscramblerExpiredJul 11, 80Jun 07, 83[H04N, H04K]
4375052 Polarization rotatable antenna feedExpiredJul 11, 80Feb 22, 83[H01P]
4288876 Demodulator for frequency modulated signalsExpiredMar 28, 77Sep 08, 81[H04B]
4189755 Television receiver threshold extension system by means of signal-to-noise control of bandwidthExpiredMar 17, 78Feb 19, 80[H04N]

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